Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/07/2020   18:25:00   (  -0.03, -75.20) (   0.18, -74.33)  100.09                80
 01/09/2020   06:49:10   (   0.04, -75.21) (   1.03, -79.52)  491.86                80
 01/10/2020   06:27:35   (   0.04, -75.21) (  -0.00, -74.94)   29.86                80
 01/12/2020   18:32:59   (  -0.04, -75.22) (  -0.15, -75.60)   44.19                80
 01/13/2020   18:11:23   (  -0.04, -75.22) (   0.88, -71.03)  477.98                80
 01/15/2020   06:35:34   (   0.05, -75.24) (   0.25, -76.23)  112.83                80
 01/16/2020   06:13:59   (   0.04, -75.25) (  -0.78, -71.66)  409.62                80
 01/17/2020   18:38:18   (  -0.05, -75.26) (  -0.41, -76.89)  184.99                80
 01/18/2020   18:16:43   (  -0.05, -75.28) (   0.62, -72.31)  337.93                80
 01/20/2020   06:40:53   (   0.06, -75.30) (   0.56, -77.51)  251.53                80